{"id":2793,"date":"2024-12-24T21:04:49","date_gmt":"2024-12-24T12:04:49","guid":{"rendered":"http:\/\/batmask.dothome.co.kr\/?p=2793"},"modified":"2024-12-24T21:04:49","modified_gmt":"2024-12-24T12:04:49","slug":"koin-%ec%82%ac%ec%9a%a9%ed%95%98%ea%b8%b0","status":"publish","type":"post","link":"http:\/\/batmask.net\/index.php\/2024\/12\/24\/2793\/","title":{"rendered":"Koin \uc0ac\uc6a9\ud558\uae30"},"content":{"rendered":"\n

\uc2dc\uc791\ud558\uae30\uc5d0 \uc55e\uc11c<\/h3>\n\n\n\n

\uac1c\ubc1c\uc790\ub85c \uc9c1\uc7a5\uc5d0\uc11c \uc77c\ud55c\uc9c0\ub294 \uc880 \uc624\ub798\ub410\uc9c0\ub9cc, \uc77c \ud560\ub54c \uc54c\uac8c\ub41c \uc9c4\ub9ac\uc911 \ud558\ub098\ub294 “\ubb38\uc11c\ub97c \uc788\ub294\uadf8\ub300\ub85c 100% \uc2e0\ub8b0\ud558\uc9c0 \ub9c8\ub77c”\uc600\ub2e4. \uc2ec\uc9c0\uc5b4 MS API\ubb38\uc11c\ub3c4 \uc9c1\uc811 \uc0ac\uc6a9\ud574\ubcf4\uba74 \ub2e4\ub974\uac8c \ub3d9\uc791\ud558\ub294 \uacbd\uc6b0\uac00 \uc788\uae30\ub3c4 \ud588\uc74c. \uc548\ud0c0\uae5d\uc9c0\ub9cc, \uac1c\ubc1c\uc790\ub294 \uacb0\uad6d \ucf54\ub4dc\ub85c \uc77d\uc5b4\uc57c \ud558\ub294 \uc874\uc7ac\ub780\uac78 \ub610 \uae68\ub2eb\ub294 \uacbd\ud5d8\uc744 \ud558\uac8c\ub410\ub2e4.
<\/p>\n\n\n\n

Koin 4.0\uc774 \ub098\uc654\uc74c\uc5d0\ub3c4 \uacf5\uc2dd \uc0ac\uc774\ud2b8\uc758 \ubb38\uc11c\ub4e4\uc740 3.5\uc5d0 \uae30\ubc18\ud55c \ub0b4\uc6a9\ub4e4\uc774\ub2e4. \ubc84\uc804\ubcc4 API\ubb38\uc11c\ub3c4 \uc5c6\uace0, \uc2ec\uc9c0\uc5b4 \uac00\uc7a5 \uac04\ub2e8\ud55c Kotlin tutorial\ub3c4 \uc644\uc804\ud558\uc9c0 \uc54a\uc740\ucc44\ub85c \uc720\uc9c0\ub418\uace0 \uc788\ub2e4. \uc0ac\uc6a9\uc790\uce35\ub3c4 \uadf8\ub807\uac8c \ub9ce\uc9c0 \uc54a\uc544\uc11c \uad00\ub828 \ub0b4\uc6a9\ucc3e\uae30\uac00 \uc27d\uc9c0\uc54a\ub2e4. \uc0ac\ub78c\ub4e4\uc774 \uc0ac\uc6a9\uc774 \uc27d\ub2e4\uace0 \ud558\uc9c0\ub9cc, \uc774\uac8c \uc26c\uc6b4\uac74\uc9c0 \uc798 \ubaa8\ub974\uaca0\ub2e4. \ucf54\ub4dc\ub97c \ub72f\uc5b4\ubcfc\uac70 \uc544\ub2c8\uba74 \uc880 \ubaa8\ub974\uaca0\ub124. \uadf8\ub7fc\uc5d0\ub3c4 KMP\ub97c \uc4f8\uac70\uba74 \uc774\uac78 \uc4f0\ub294\uac8c \ub9de\ub294\uac70 \uac19\uae30\ub3c4 \ud558\uace0. \ubbff\uc744\uac74 github\uc5d0 \uc788\ub294 \ucf54\ub4dc\ubfd0\uc784\uc744 \uc54c\uace0 \uc0ac\uc6a9\ud558\uc790.<\/p>\n\n\n\n

DI (Dependency Injection)<\/h3>\n\n\n\n

Dependency Injection\uc740 \uac1d\uccb4\ub97c \uc9c1\uc811 \uad00\ub9ac\ud558\uc9c0 \uc54a\uc544\ub3c4 \ud544\uc694\ud55c \uacbd\uc6b0\uc5d0 \uac1d\uccb4\ub97c \uc790\ub3d9\uc73c\ub85c \uc0dd\uc131\ud574\uc8fc\ub294 \ubc29\ubc95\uc774\ub2e4. \uc774\uac83\uc740 “separation of concerns<\/a>” \uc6d0\uce59\uc744 \uc704\ud55c \uac83\uc778\ub370, \ud55c \ubd80\ubd84\uc758 \uad6c\ud604\uc5d0 \uc788\uc5b4\uc11c \ub2e4\ub978 \ubd80\ubd84\ub4e4\uc758 \uc138\uc138\ud55c \uc815\ubcf4\ub4e4\uc744 \uc54c \ud544\uc694 \uc5c6\uac8c \ub9cc\ub4e4\uc5b4\uc8fc\ub294\uac78 \ub9d0\ud55c\ub2e4. \ubaa8\ub4c8\ub7ec \ud504\ub85c\uadf8\ub798\ubc0d\uc774\ub098, \uc778\ucea1\uc290\ub808\uc774\ud305(encapsulating)\ucc98\ub7fc \uc815\ubcf4\ub97c \uc228\uae30\ub294 \uac83\ub4e4\uc774 \ub2e4 \uc774\uc5d0 \ud574\ub2f9\ud55c\ub2e4. Dependency Injection\uc740 \ub9d0 \uadf8\ub300\ub85c \uc758\uc874\uc131\uc5d0 \ub300\ud55c \uac83\uc778\ub370, \uc778\uc790\ub85c \ubc1b\uc544\uc624\ub294 \uac1d\uccb4\ub098 \uba64\ubc84\ub85c \uac16\uace0 \uc788\ub294 \uac1d\uccb4\uc758 \uc0dd\uc131\uc744 \ub0b4\ubd80\uc801\uc73c\ub85c \uad6c\ud604\ud574\uc918\uc11c \uc774\ub7ec\ud55c \uac1d\uccb4\ub4e4\uc744 \uc5b4\ub514\uc5d0\uc11c \uc778\uc2a4\ud134\uc2a4\ub97c \ub9cc\ub4e4\uc5b4\uc57c \ud558\ub294\uc9c0 \uac19\uc740 \ubcf5\uc7a1\ud55c \ubb38\uc81c\ub4e4\uc744 \uc5c6\uc560\uc900\ub2e4. \ucd94\uac00\uc801\uc73c\ub85c \uac1d\uccb4 \uc0dd\uc131\uc5d0 \ub300\ud55c\uac78 \uc678\ubd80\uc5d0 \ub9e1\uaca8 \uc758\uc874\uc131\uc774 \ubd84\ub9ac\ub418\ubbc0\ub85c \ub514\ubc84\uae45\uc2dc\uc5d0 \ubaa9\uc5c5\ub4f1\uc758 \uc0ac\uc6a9\uc774 \uac04\ud3b8\ud574\uc9c4\ub2e4. \uac1c\ubc1c\uc790\uac00 \uc778\uc2a4\ud134\uc2a4\ub4e4\uc744 \uc9c1\uc811 \uad00\ub9ac\ud558\uc9c0 \uc54a\uc73c\ub2c8 \uc554\ud2bc \ud3b8\ud558\ub2e4. \ub9d0\ub85c\ub9cc \uc368\uc11c\ub294 \ud63c\ub780\uc2a4\ub7ec\uc6b8 \uc218 \uc788\uc73c\ub2c8 \ub2e4\uc74c\uc744 \ubcf4\uc790.<\/p>\n\n\n\n

\uc548\ub4dc\ub85c\uc774\ub4dc \uac1c\ubc1c\uc790 \uacf5\ud648\uc5d0\uc11c\ub294 \ucc28\uc640 \uc5d4\uc9c4\uc758 \uc608\ub97c\ub4e4\uc5b4 \ubcf4\ub2e4 \uce5c\ucca0\ud558\uace0 \uc0c1\uc138\ud558\uac8c \uc774\uc5d0\ub300\ud574 \uc124\uba85\ud55c\ub2e4. <\/p>\n\n\n\n

<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
class<\/span> <\/span>Car<\/span> {<\/span><\/span>\n<\/span>\n    <\/span>private<\/span> <\/span>val<\/span> engine <\/span>=<\/span> <\/span>Engine<\/span>()<\/span><\/span>\n<\/span>\n    <\/span>fun<\/span> <\/span>start<\/span>() {<\/span><\/span>\n        engine.<\/span>start<\/span>()<\/span><\/span>\n    }<\/span><\/span>\n}<\/span><\/span>\n<\/span>\nfun<\/span> <\/span>main<\/span>(args: <\/span>Array<\/span>) {<\/span><\/span>\n    <\/span>val<\/span> car <\/span>=<\/span> <\/span>Car<\/span>()<\/span><\/span>\n    car.<\/span>start<\/span>()<\/span><\/span>\n}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\uc704 \uc608\uc81c\uc758 \uacbd\uc6b0, Car\uc5d0\uc11c Engine\uc744 \uc0dd\uc131\ud558\uace0 \uc788\uae30 \ub54c\ubb38\uc5d0 Car\uc640 Engine\uc740 \uac15\ud558\uac8c \ucee4\ud50c\ub9c1\ub41c \uc758\uc874\uc131\uc744 \uac16\uace0 \uc788\ub2e4. \uc5d4\uc9c4\uc744 \ubc14\uafb8\ub824\uba74, Car \ud074\ub798\uc2a4\ub97c \uc218\uc815\ud574\uc57c \ud55c\ub2e4. \uc774\uac83\uc740 \ud14c\uc2a4\ud2b8\ub3c4 \ud798\ub4e4\uac8c \ub41c\ub2e4. \ub9cc\uc57d\uc5d0 Engine\uc744 \uc778\uc790\ub85c \ubc1b\uc544\uc624\ub3c4\ub85d \uad6c\ud604\ud55c\ub2e4\uba74,<\/p>\n\n\n\n
<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
class<\/span> <\/span>Car<\/span>(<\/span>private<\/span> <\/span>val<\/span> engine: <\/span>Engine<\/span>) {<\/span><\/span>\n    <\/span>fun<\/span> <\/span>start<\/span>() {<\/span><\/span>\n        engine.<\/span>start<\/span>()<\/span><\/span>\n    }<\/span><\/span>\n}<\/span><\/span>\n<\/span>\nfun<\/span> <\/span>main<\/span>(args: <\/span>Array<\/span>) {<\/span><\/span>\n    <\/span>val<\/span> engine <\/span>=<\/span> <\/span>Engine<\/span>()<\/span><\/span>\n    <\/span>val<\/span> car <\/span>=<\/span> <\/span>Car<\/span>(engine)<\/span><\/span>\n    car.<\/span>start<\/span>()<\/span><\/span>\n}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
Engine\uacfc Car\uc758 \uac15\ud558\uac8c \ucee4\ud50c\ub9c1\ub41c \uc758\uc874\uc131\uc774 \uc0ac\ub77c\uc9c0\uba74\uc11c \uc720\uc5f0\ud55c \uc791\uc5c5\uc774 \uac00\ub2a5\ud574\uc9c4\ub2e4. \uc678\ubd80\uc5d0\uc11c \uc778\uc2a4\ud134\uc2a4\ub97c \uc0dd\uc131\ud574\uc11c \ub123\uc5b4\uc8fc\uace0 \uc788\uc73c\ubbc0\ub85c \uc774\ub7f0 \ud615\ud0dc\ub97c DI(Dependency Injection)\uc774\ub77c\uace0 \ud55c\ub2e4. \uc704\uc640 \uac19\uc740 \uacbd\uc6b0\ub97c Constructor Injection\uc774\ub77c\uace0 \ubd80\ub974\uace0, \uc774\ub7f0 \ud615\ud0dc\uac00 \ubd88\uac00\ub2a5\ud560 \ub54c \ub2e4\uc74c\uacfc \uac19\uc774 \uad6c\ud604\ud55c\ub2e4.<\/p>\n\n\n\n
<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
class<\/span> <\/span>Car<\/span> {<\/span><\/span>\n    <\/span>lateinit<\/span> <\/span>var<\/span> engine: <\/span>Engine<\/span><\/span>\n<\/span>\n    <\/span>fun<\/span> <\/span>start<\/span>() {<\/span><\/span>\n        engine.<\/span>start<\/span>()<\/span><\/span>\n    }<\/span><\/span>\n}<\/span><\/span>\n<\/span>\nfun<\/span> <\/span>main<\/span>(args: <\/span>Array<\/span>) {<\/span><\/span>\n    <\/span>val<\/span> car <\/span>=<\/span> <\/span>Car<\/span>()<\/span><\/span>\n    car.engine <\/span>=<\/span> <\/span>Engine<\/span>()<\/span><\/span>\n    car.<\/span>start<\/span>()<\/span><\/span>\n}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
Car \ud074\ub798\uc2a4 \uc0dd\uc131\uc2dc Engine\uc774 \uc0dd\uc131\ub418\uc9c0 \uc54a\uace0 \uc678\ubd80\uc5d0\uc11c \uc0dd\uc131\ud574\uc11c \uba64\ubc84\ub85c \ub123\uc5b4\uc8fc\uac8c \ub418\ub294\ub370, \uc774\ub7f0\uac78 Field Injection \uc774\ub77c\uace0 \ud55c\ub2e4. <\/p>\n\n\n\n
 Kotlin\uc774 \ub098\ub0a0\uc774 \ubc1c\uc804\ud574 \ub098\uac00\uba74\uc11c, Java \uc758\uc874\uc131\ub3c4 \ub0ae\uc544\uc9c0\uace0 \ub9ce\uc740 \ubd80\ubd84\uc774 Kotlin native\ub85c \ub300\uccb4\ub418\uace0 \uc788\ub2e4. \uc774\ub7f0 \uc640\uc911\uc5d0 Kotlin\ub9cc\uc744 \uc704\ud55c Kotlin native DI\uac00 \ub098\uc654\ub294\ub370, \ubc14\ub85c Koin <\/a>\uc774\ub2e4. Koin\uc740 Kotlin\uc73c\ub85c \uad6c\ud604\ub418\uc5b4 \uc788\uc5b4 Kotlin native\ub098 KMP(Kotlin Multi-Platform)\uc5d0 \uc5b4\uc6b8\ub9b0\ub2e4. \ub610\ud55c \uac00\uc7a5 \ud070 \ucc28\uc774\uc810\uc774 \uc788\ub294\ub370, Koin\uc740 Hilt\uc640 \ub2e4\ub974\uac8c \ucef4\ud30c\uc77c \ud0c0\uc784\uc5d0 \uac1d\uccb4\ub97c \uc0dd\uc131\ud558\uc9c0 \uc54a\uace0 \ub7f0\ud0c0\uc784\uc5d0 \uc791\ub3d9\ud55c\ub2e4. <\/p>\n\n\n\n
Dagger-Hilt\ub294 \ub9e4\uc6b0 \uba54\uc774\uc800\ud55c \ub188\ub4e4\ub85c \uc790\ub8cc\ub3c4 \ub9ce\uace0 \uc548\ub4dc\ub85c\uc774\ub4dc \uacf5\ud648\ub3c4 \uc774\uac78 \uae30\uc900\uc73c\ub85c \uc124\uba85\ud55c\ub2e4. \uc5ec\uae30\uc11c\ub294 Koin\uc5d0 \ub300\ud574 \uae30\ubcf8\uc0ac\uc6a9\ubc95\uc744 \uac04\ub2e8\ud788 \uc54c\uc544\ubcf4\ub824\uace0 \ud55c\ub2e4. <\/p>\n\n\n\n
Koin Setup : https:\/\/insert-koin.io\/docs\/setup\/koin<\/a><\/h3>\n\n\n\n
Koin\uc740 \uadf8\ub9ac \uc624\ub798\ub418\uc9c0 \uc54a\uc740 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub85c \ubc84\uc804\uc774 \uc62c\ub77c\uac00\uba74\uc11c \ubcc0\ud654\uac00 \ub9ce\ub2e4. \uc5ec\uae30\uc11c\ub294 \ucd5c\uc2e0 \ubc84\uc804\uc744 \uc0ac\uc6a9\ud558\uace0, Kotlin\uc5d0\uc11c\uc758 \uc0ac\uc6a9\uc5d0 \ub300\ud574 \uc124\uba85\ud558\uaca0\ub2e4. IntelliJ IDEA community \ubc84\uc804\uc73c\ub85c \uc0d8\ud50c \ucf54\ub4dc\ub97c \ub9cc\ub4e4\uc5c8\ub2e4. \uc548\ub4dc\ub85c\uc774\ub4dc\ub294 \ubcc4\ub3c4 \ud3ec\uc2a4\ud2b8\ub85c. <\/p>\n\n\n\n
Koin \ub77c\uc774\ube0c\ub7ec\ub9ac \ub9ac\uc2a4\ud2b8<\/a>\ub97c \ubcf4\uba74, \uc218\ub9ce\uc740 \ub77c\uc774\ube0c\ub7ec\ub9ac\uac00 \ud3ec\ud568\ub418\uc5b4 \uc788\ub294 \uac83\uc744 \uc54c \uc218 \uc788\ub2e4. 3.5.0\ubd80\ud130 BOM\uc774 \uc801\uc6a9\ub418\uc5c8\ub2e4\uace0 \ud558\ub294\ub370, \uc774\ub97c \uc0ac\uc6a9\ud558\uba74 \uac01 \ub77c\uc774\ube0c\ub7ec\ub9ac \uac1c\uac1c\ubcc4\ub85c \uc0dd\uac01\ud558\uc9c0 \uc54a\uc544\ub3c4 \ub41c\ub2e4. BOM\uc740 \uac01 \ub77c\uc774\ube0c\ub7ec\ub9ac\uac00 \ub2e4\ub978 \ubc84\uc804\ub4e4\uc744 \uac00\uc9c8 \ub54c, \uc11c\ub85c \ub9de\ub294 \ubc84\uc804\uc744 \ub9cc\ub4e4\uc5b4\uc918\uc11c \ud638\ud658\uc131\uacfc \ub77c\uc774\ube0c\ub7ec\ub9ac \ubc84\uc804\uad00\ub9ac\ub97c \uc27d\uac8c \ub9cc\ub4e4\uc5b4\uc900\ub2e4. BOM\uc5d0 \ub300\ud55c \uc124\uba85\uc740 \ub2e4\ub978\ubd84\uc758 \ube14\ub85c\uadf8 \ud3ec\uc2a4\ud305<\/a>\uc744 \ucc38\uace0\ud558\uc790.<\/p>\n\n\n\n
build.gradle.kts \uc5d0 \ub2e4\uc74c\uc744 \ucd94\uac00\ud55c\ub2e4. <\/p>\n\n\n\n
<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
val<\/span> koinVersion <\/span>=<\/span> <\/span>"4.0.0"<\/span><\/span>\n..<\/span>.<\/span><\/span>\ndependencies<\/span> {<\/span><\/span>\n    <\/span>..<\/span>.<\/span><\/span>\n    <\/span>implementation<\/span>(<\/span>platform<\/span>(<\/span>"io.insert-koin:koin-bom:<\/span>$koinVersion<\/span>"<\/span>))<\/span><\/span>\n    <\/span>implementation<\/span>(<\/span>"io.insert-koin:koin-core"<\/span>)<\/span><\/span>\n}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
BOM\uc744 \uc774\uc6a9\ud574 \uae30\ubcf8\uc801\uc778 core \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c \ucd94\uac00\ud574\uc92c\ub2e4. \ud544\uc694\ud55c\uacbd\uc6b0 \uc704\uc758 core\uc640  \uac19\uc774 \ub354 \ucd94\uac00\ud574\uc8fc\uba74 \ub41c\ub2e4.<\/p>\n\n\n\n
Koin Usage : https:\/\/insert-koin.io\/docs\/quickstart\/kotlin<\/a><\/h3>\n\n\n\n
\uba3c\uc800, Koin\uc740 DSL(Domain Specific Language)\uc774\ub2e4. \uc790\uccb4\uc801\uc73c\ub85c \ud558\ub098\uc758 \uac04\ub2e8\ud55c \uc5b8\uc5b4\ub85c \ubcf4\uc774\ub3c4\ub85d \uac00\uacf5\ub418\uc5b4 \uc788\ub2e4. \uc774\uac78 \uc54c\uace0 \uc2dc\uc791\ud574\ubcf4\uc790.<\/p>\n\n\n\n
 DI\ub294 injection\ub420 \uc778\uc2a4\ud134\uc2a4\ub4e4\uc744 \ub530\ub85c \uad00\ub9ac\ud574\uc900\ub2e4. inject\ub418\uc57c \ud560 \ub54c \uad00\ub9ac\ud558\ub294 \ucef4\ud3ec\ub10c\ud2b8\uc911\uc5d0 \ud544\uc694\ud55c \uc778\uc2a4\ud134\uc2a4\ub97c \uc0dd\uc131\ud574 \ub3cc\ub824\uc8fc\uac70\ub098, \uc2f1\uae00\ud1a4\ucc98\ub7fc \ub2e8\uc77c \uc778\uc2a4\ud134\uc2a4\uc758 \uacbd\uc6b0 \uadf8 \ub808\ud37c\ub7f0\uc2a4\ub97c \ub3cc\ub824\uc900\ub2e4. \ub300\ub7b5\uc801\uc778 \ud615\ud0dc\ub97c \uadf8\ub824\ubcf4\uba74 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n
\n
\"\"<\/figure>\n<\/div>\n\n\n
\uc774\uc640\uac19\uc774 \uac00\uc7a5 \uba3c\uc800 \ud574\uc904 \ubd80\ubd84\uc740 Koin module\uc744 \ub9cc\ub4e4\uace0 \ud544\uc694\ud55c \ucef4\ud3ec\ub10c\ud2b8\ub4e4\uc744 \uc815\uc758 \ud558\ub294 \uac83\uc774\ub2e4. User \ub9ac\uc2a4\ud2b8\ub97c \uad00\ub9ac\ud558\ub294 \uacbd\uc6b0\ub97c \uc0dd\uac01\ud574\ubcf4\uc790. \uc548\ub4dc\ub85c\uc774\ub4dc\uc758 MVVM\uad6c\uc870\ucc98\ub7fc \ub370\uc774\ud130\ub97c \uad00\ub9ac\ud558\ub294 Repository\ub97c \ub2e4\uc74c\uacfc \uac19\uc774 \ub9cc\ub4e0\ub2e4.<\/p>\n\n\n\n
<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
data<\/span> <\/span>class<\/span> <\/span>User<\/span>(<\/span>val<\/span> name: <\/span>String<\/span>)<\/span><\/span>\n<\/span>\ninterface<\/span> <\/span>UserRepository<\/span> {<\/span><\/span>\n    <\/span>fun<\/span> <\/span>findUser<\/span>(name: <\/span>String<\/span>): <\/span>User<\/span>?<\/span><\/span>\n    <\/span>fun<\/span> <\/span>addUsers<\/span>(users: <\/span>List<\/span><<\/span>User<\/span>>)<\/span><\/span>\n}<\/span><\/span>\n<\/span>\nclass<\/span> <\/span>UserRepositoryImpl<\/span> : <\/span>UserRepository<\/span> {<\/span><\/span>\n    <\/span>private<\/span> <\/span>val<\/span> _users <\/span>=<\/span> <\/span>arrayListOf<\/span><<\/span>User<\/span>>()<\/span><\/span>\n<\/span>\n    <\/span>override<\/span> <\/span>fun<\/span> <\/span>findUser<\/span>(name: <\/span>String<\/span>) : <\/span>User<\/span>? {<\/span><\/span>\n        <\/span>return<\/span> _users.<\/span>firstOrNull<\/span> { it.name <\/span>==<\/span> name }<\/span><\/span>\n    }<\/span><\/span>\n<\/span>\n    <\/span>override<\/span> <\/span>fun<\/span> <\/span>addUsers<\/span>(users: <\/span>List<\/span><<\/span>User<\/span>>) {<\/span><\/span>\n        _users.<\/span>addAll<\/span>(users)<\/span><\/span>\n    }<\/span><\/span>\n}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\uc778\ud130\ud398\uc774\uc2a4\ub97c \uc0ac\uc6a9\ud588\ub294\ub370, \uc774\ub294 \uc778\ud130\ud398\uc774\uc2a4\uc758 \uc0ac\uc6a9\uc2dc \uc608\uc81c\ub97c \ud55c \ubc88\uc5d0 \ubcf4\uc5ec\uc904 \uc218 \uc788\uae30 \ub54c\ubb38\uc774\ub2e4. \uc774\uc81c \uc774\uac78 Koin module\uc744 \ub9cc\ub4e4\uc5b4 \uc815\uc758\ud574\ubcf4\uc790.<\/p>\n\n\n\n
<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
val<\/span> appModule <\/span>=<\/span> <\/span>module<\/span> {<\/span><\/span>\n      <\/span>\/\/ classic <\/span><\/span>\n\/\/    single<UserRepository> { UserRepositoryImpl() }<\/span><\/span>\n    <\/span>\/\/ constructor DSL<\/span><\/span>\n    <\/span>singleOf<\/span>(::<\/span>UserRepositoryImpl<\/span>) { <\/span>bind<\/span><<\/span>UserRepository<\/span>>() }<\/span><\/span>\n}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\uc704 \ucf54\ub4dc\uc5d0\uc11c \uc8fc\uc11d\ucc98\ub9ac\ud55c \ubd80\ubd84\uacfc \ucc98\ub9ac\uac00 \uc548\ub41c \ub77c\uc778\uc774 \ub3d9\uc77c\ud55c \uae30\ub2a5\uc744 \ud55c\ub2e4. \ub2e4\ub9cc, \uc8fc\uc11d\ucc98\ub9ac \ud55c \ubd80\ubd84\uc774 \uc608\uc804 \uc0ac\uc6a9\ubc29\uc2dd\uc774\uace0, \uc0c8\ub85c\uc6b4 constructor DSL\ud615\ud0dc\ub85c \uc544\ub798\ucc98\ub7fc \uc0ac\uc6a9\ud560 \uc218 \uc788\ub2e4. \uc778\ud130\ud398\uc774\uc2a4\uc640 \uad6c\ud604\uccb4\uac00 \uac01\uac01 \uc5b4\ub514\uc5d0 \uc704\uce58\ud558\ub294\uc9c0 \ud655\uc778\ud574\ubcf4\uba74 \uc5b4\ub5bb\uac8c \uc0ac\uc6a9\ud558\ub294\uc9c0 \uc54c \uc218 \uc788\ub2e4. single, singleof\ub97c \uc4f0\uace0 \uc788\ub294\ub370, \uc774\ub294 \uc2f1\uae00\ud1a4 \uac1d\uccb4\uc758 \uacbd\uc6b0 \uc774\ub807\uac8c \uc815\uc758\ud574\uc11c \uc0ac\uc6a9\ud55c\ub2e4.<\/p>\n\n\n\n
\uc2f1\uae00\ud1a4\uc774 \uc544\ub2c8\uace0 \ub9e4\ubc88 \uac1d\uccb4\ub97c \uc0dd\uc131\ud558\ub294 \uacbd\uc6b0\uc5d0 factoryOf()\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\ub2e4. \ub2e4\ub9cc, \uc544\uc9c1 \uc801\uc808\ud55c \uc608\ub97c \ucc3e\uc9c0 \ubabb\ud588\ub2e4. factoryOf()\ub294 \ub9e4\ubc88 \uac1d\uccb4\ub97c \uc0dd\uc131\ud574 \ub3cc\ub824\uc8fc\uae30 \ub54c\ubb38\uc5d0, \uad73\uc774 \uc774\uac78 \uc0ac\uc6a9\ud560 \ud544\uc694\uac00 \uc788\ub098 \uc2f6\uc740\ub370, \ubaa8\ub4c8 \ub0b4\uc5d0\uc11c \ud30c\ub77c\ubbf8\ud130\ub85c \uac1d\uccb4\ub97c \uc0dd\uc131\ud574 \ub123\uc5b4\uc57c \ud560 \ub54c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc744\uac70\uac19\ub2e4.<\/p>\n\n\n\n
\ub2e4\uc2dc \uc704\uc758 \uc608\uc81c\ub97c \uc774\uc5b4\uac00\ubcf4\uba74, Repository\ub97c \uc0dd\uc131\uc790 \uc778\uc790\ub85c \ubc1b\ub294 UserService\ub97c \ub2e4\uc74c\uacfc \uac19\uc774 \ub9cc\ub4e4\uace0\uc790\ud55c\ub2e4. <\/p>\n\n\n\n
<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
object<\/span> <\/span>DefaultData<\/span> {<\/span><\/span>\n    <\/span>val<\/span> DEFAULT_USER <\/span>=<\/span> <\/span>User<\/span>(<\/span>"Koin"<\/span>)<\/span><\/span>\n    <\/span>val<\/span> DEFAULT_USERS <\/span>=<\/span> <\/span>listOf<\/span>(DEFAULT_USER)<\/span><\/span>\n}<\/span><\/span>\n<\/span>\nclass<\/span> <\/span>UserService<\/span>(<\/span>private<\/span> <\/span>val<\/span> userRepository: <\/span>UserRepository<\/span>) {<\/span><\/span>\n    <\/span>fun<\/span> <\/span>getDefaultUser<\/span>() : <\/span>User<\/span> <\/span>=<\/span> userRepository.<\/span>findUser<\/span>(DefaultData.DEFAULT_USER.name) ?: <\/span>error<\/span>(<\/span>"Can't find default user"<\/span>)<\/span><\/span>\n    <\/span>fun<\/span> <\/span>saveDefaultUsers<\/span>() {<\/span><\/span>\n        userRepository.<\/span>addUsers<\/span>(DefaultData.DEFAULT_USERS)<\/span><\/span>\n    }<\/span><\/span>\n}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\uadf8\ub7f0\ub370, \uc774 UserService\ub3c4 \uc2f1\uae00\ud1a4\uc73c\ub85c module\uc5d0 \ub123\uace0 \uc2f6\ub2e4. \uc774\uacbd\uc6b0, module\uc5d0 \uc788\ub294 Repository\ub97c \ub610\ud55c module\uc5d0 \uc788\ub294 UserService\uc758 \uc778\uc790\ub85c \ub118\uaca8\uc918\uc57c \ud55c\ub2e4. \uc774\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n
<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
val<\/span> appModule <\/span>=<\/span> <\/span>module<\/span> {<\/span><\/span>\n\/\/ classic <\/span><\/span>\n\/\/    single<UserRepository> { UserRepositoryImpl() }<\/span><\/span>\n\/\/    single { UserService(get())}<\/span><\/span>\n\/\/ constructor DSL<\/span><\/span>\n    <\/span>singleOf<\/span>(::<\/span>UserRepositoryImpl<\/span>) { <\/span>bind<\/span><<\/span>UserRepository<\/span>>() }<\/span><\/span>\n    <\/span>singleOf<\/span>(::<\/span>UserService<\/span>)<\/span><\/span>\n}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\uace0\uc804\uc801\uc778 \ubc29\uc2dd\uc73c\ub85c\ub294 get()\uc744 \uc774\uc6a9\ud558\uba74, module\uc5d0\uc11c \ud574\ub2f9 \uc778\uc2a4\ud134\uc2a4\ub97c \uaebc\ub0b4\uc62c \uc218 \uc788\ub2e4. \uc774\ub807\uac8c \uc778\uc790\ub85c \ub118\uaca8\uc900\ub2e4. \uc0c8\ub85c\uc6b4 constructor DSL\uc5d0\uc11c\ub294 \uc774 get()\uc744 \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uc544\ub3c4 \uc790\ub3d9\uc73c\ub85c \ucc98\ub9ac\ud574\uc900\ub2e4. (\ub4a4\uc5d0\uc11c get()\uc744 \ucd94\uac00\ud574\uc8fc\ub294 \uac83\uc73c\ub85c \uc54c\uace0 \uc788\ub2e4. )<\/p>\n\n\n\n
\uc774\ub807\uac8c module\uc5d0 \ub123\uc5b4\uc8fc\uae34 \ud588\ub294\ub370, \ub0b4 \uc571\uc5d0\uc11c \uc5b4\ub5bb\uac8c \uc0ac\uc6a9\uc774 \uac00\ub2a5\ud560\uae4c? \uc6b0\uc120,  Koin\uc758 \ucd08\uae30\ud654 \uc791\uc5c5\uc774 \ud544\uc694\ud558\ub2e4. \ubc14\ub85c startKoin \ud568\uc218\uac00 \uadf8 \uc5ed\ud560\uc774\uba70, \uc774\uac78 \uc5b4\ub518\uac00\uc5d0\uc11c \ubd88\ub7ec\uc918\uc57c \ud55c\ub2e4. \uc5ec\uae30\uc120 \ub2e8\uc21c\ud55c main\ud568\uc218\ub97c \uac16\ub294 Kotlin \uc571\uc774\ubbc0\ub85c, \uc5ec\uae30\uc11c \ubd88\ub7ec\uc8fc\uba74 \ub41c\ub2e4.<\/p>\n\n\n\n
<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
fun<\/span> <\/span>main<\/span>() {<\/span><\/span>\n    <\/span>startKoin<\/span> {<\/span><\/span>\n        <\/span>modules<\/span>(appModule)<\/span><\/span>\n    }<\/span><\/span>\n}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\uc0ac\uc2e4, Koin module\uc740 \uc5ec\ub7ec\uac1c\ub97c \ub9cc\ub4e4 \uc218\ub3c4 \uc788\uc73c\uba70, \uc774 startKoin\uc5d0\uc11c \uadf8 module\ub4e4\uc744 \ub85c\ub529\ud574\uc900\ub2e4. \uadf8\ub807\uac8c \ub85c\ub529\ub41c \ubaa8\ub4c8\ub4e4\uc774 \uc0ac\uc6a9 \uac00\ub2a5\ud574\uc9c0\ub294 \uac83\uc774\ub2e4. <\/p>\n\n\n\n
\uc774\uc81c \uc900\ube44\ub294 \ub2e4 \ub05d\ub0ac\ub2e4. \ub9c8\uc9c0\ub9c9\uc73c\ub85c \uc774\ub807\uac8c \ub85c\ub529\ub41c \ubaa8\ub4c8\uc5d0\uc11c Injection\uc744 \uc5b4\ub5bb\uac8c \uc2dc\ud0ac\uc9c0 \ud558\ub294 \ubd80\ubd84\uc774\ub2e4. \ud3b8\uc758\uc0c1 UserApplication \ud074\ub798\uc2a4\ub97c \ucd94\uac00\ud558\uc790. \uc774\ub807\uac8c\ud558\uba74, main\ud568\uc218\ub97c \uc0ac\uc6a9\ud558\ub294 Kotlin \uc678\uc5d0\ub3c4 \uc801\uc6a9\ud560\ub9cc\ud55c \uad6c\uc870\uac00 \ub9cc\ub4e4\uc5b4\uc9c4\ub2e4.<\/p>\n\n\n\n
<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
class<\/span> <\/span>UserApplication<\/span> : <\/span>KoinComponent<\/span> {<\/span><\/span>\n    <\/span>private<\/span> <\/span>val<\/span> userService : <\/span>UserService<\/span> <\/span>by<\/span> <\/span>inject<\/span>()<\/span><\/span>\n<\/span>\n    <\/span>init<\/span> {<\/span><\/span>\n        userService.<\/span>saveDefaultUsers<\/span>()<\/span><\/span>\n    }<\/span><\/span>\n<\/span>\n    <\/span>fun<\/span> <\/span>sayHello<\/span>() {<\/span><\/span>\n        <\/span>val<\/span> user <\/span>=<\/span> userService.<\/span>getDefaultUser<\/span>()<\/span><\/span>\n        <\/span>val<\/span> message <\/span>=<\/span> <\/span>"Hello '<\/span>$user<\/span>'!"<\/span><\/span>\n        <\/span>println<\/span>(message)<\/span><\/span>\n    }<\/span><\/span>\n}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\ucf54\ub4dc\ub97c \ubcf4\uba74, userService\ub97c by inject()\ub85c injection\ud574\uc8fc\uace0 \uc788\ub2e4. \uc774\ub294 UserApplication\uc774 \uc0c1\uc18d\ubc1b\ub294 \uc778\ud130\ud398\uc774\uc2a4\uc778 KoinComponent\uac00 \uc81c\uacf5\ud558\ub294 \uac83\uc73c\ub85c by inject()\ub294 lazy\ud558\uac8c \uc791\ub3d9\ud55c\ub2e4. \ubc14\ub85c \uc791\ub3d9\ud558\ub3c4\ub85d \ud558\ub824\uba74 get()\uc744 \uc0ac\uc6a9\ud558\uba74 \ub41c\ub2e4. \ucd5c\uc885\uc801\uc73c\ub85c \uba54\uc778\ud568\uc218\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \uc4f8 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n
<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
fun<\/span> <\/span>main<\/span>() {<\/span><\/span>\n    <\/span>startKoin<\/span> {<\/span><\/span>\n        <\/span>modules<\/span>(appModule)<\/span><\/span>\n    }<\/span><\/span>\n<\/span>\n    <\/span>UserApplication<\/span>().<\/span>sayHello<\/span>()<\/span><\/span>\n}<\/span><\/span>\n----<\/span><\/span>\n\/\/ console result<\/span><\/span>\n\/\/ Hello 'User(name=Koin)'!<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\uc774 \uc678\uc5d0\ub3c4 \uc778\uc790\ub97c \uc804\ub2ec\ud558\uae30\uc704\ud55c parameterOf()\ub97c \uc0ac\uc6a9\ud560 \uc218\ub3c4 \uc788\uc73c\uba70, \ub354 \ub9ce\uc740 \ub0b4\uc6a9\uc740 \uacf5\uc2dd \ubb38\uc11c<\/a>\ub97c \ucc38\uc870\ud558\uae30 \ubc14\ub780\ub2e4. \uc81c\uc77c \uc55e\uc5d0\uc11c \ub9d0\ud588\uc9c0\ub9cc, \ucf54\ub4dc\ub85c \ud06c\ub85c\uc2a4 \uccb4\ud06c\ud558\ub294 \uac83\ub3c4 \uc78a\uc9c0\ub9d0\uace0 \u314b <\/p>\n","protected":false},"excerpt":{"rendered":"
\uc2dc\uc791\ud558\uae30\uc5d0 \uc55e\uc11c \uac1c\ubc1c\uc790\ub85c \uc9c1\uc7a5\uc5d0\uc11c \uc77c\ud55c\uc9c0\ub294 \uc880 \uc624\ub798\ub410\uc9c0\ub9cc, \uc77c \ud560\ub54c \uc54c\uac8c\ub41c \uc9c4\ub9ac\uc911 \ud558\ub098\ub294 “\ubb38\uc11c\ub97c \uc788\ub294\uadf8\ub300\ub85c 100% \uc2e0\ub8b0\ud558\uc9c0 \ub9c8\ub77c”\uc600\ub2e4. \uc2ec\uc9c0\uc5b4 MS API\ubb38\uc11c\ub3c4 \uc9c1\uc811 \uc0ac\uc6a9\ud574\ubcf4\uba74 \ub2e4\ub974\uac8c \ub3d9\uc791\ud558\ub294 \uacbd\uc6b0\uac00 \uc788\uae30\ub3c4 \ud588\uc74c. \uc548\ud0c0\uae5d\uc9c0\ub9cc, \uac1c\ubc1c\uc790\ub294 \uacb0\uad6d \ucf54\ub4dc\ub85c \uc77d\uc5b4\uc57c \ud558\ub294 \uc874\uc7ac\ub780\uac78 \ub610 \uae68\ub2eb\ub294 \uacbd\ud5d8\uc744 \ud558\uac8c\ub410\ub2e4. Koin 4.0\uc774 \ub098\uc654\uc74c\uc5d0\ub3c4 \uacf5\uc2dd \uc0ac\uc774\ud2b8\uc758 \ubb38\uc11c\ub4e4\uc740 3.5\uc5d0 \uae30\ubc18\ud55c \ub0b4\uc6a9\ub4e4\uc774\ub2e4. \ubc84\uc804\ubcc4 API\ubb38\uc11c\ub3c4 \uc5c6\uace0, \uc2ec\uc9c0\uc5b4 \uac00\uc7a5 \uac04\ub2e8\ud55c Kotlin tutorial\ub3c4 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34],"tags":[102,412,38,188,413],"class_list":["post-2793","post","type-post","status-publish","format-standard","hentry","category-kotlin","tag-basic","tag-koin","tag-kotlin","tag-tutorial","tag-usage"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"http:\/\/batmask.net\/index.php\/wp-json\/wp\/v2\/posts\/2793","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/batmask.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/batmask.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/batmask.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/batmask.net\/index.php\/wp-json\/wp\/v2\/comments?post=2793"}],"version-history":[{"count":68,"href":"http:\/\/batmask.net\/index.php\/wp-json\/wp\/v2\/posts\/2793\/revisions"}],"predecessor-version":[{"id":2865,"href":"http:\/\/batmask.net\/index.php\/wp-json\/wp\/v2\/posts\/2793\/revisions\/2865"}],"wp:attachment":[{"href":"http:\/\/batmask.net\/index.php\/wp-json\/wp\/v2\/media?parent=2793"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/batmask.net\/index.php\/wp-json\/wp\/v2\/categories?post=2793"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/batmask.net\/index.php\/wp-json\/wp\/v2\/tags?post=2793"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\uc704\uc5d0\uc11c \ubcf4\ub4ef, Dependency Injection\uc740 \uac1d\uccb4\ub97c \uc678\ubd80\uc5d0\uc11c \uc0dd\uc131\ud574\uc11c \uc8fc\uc785\ud574 \uc8fc\ub294 \uac83\uc778\ub370, \uc774\uac78 main()\uc5d0\uc11c \uc791\uc5c5\ud574\uc8fc\uace0 \uc788\ub2e4. \uc774\uac78 \uc0ac\uc6a9\uc790\uac00 \uc2e0\uacbd\uc4f0\uc9c0 \uc54a\uc544\ub3c4 \ub418\ub3c4\ub85d, \ucf54\ub4dc\uc0c1 \ud544\uc694\ud560 \ub54c \uac1d\uccb4\ub97c \uc0dd\uc131\ud558\uace0 \uad00\ub9ac\ud558\ub294 \ubd80\ubd84\uc744 \uc790\ub3d9\ud654 \ud560 \uc218 \uc788\ub2e4. \uc774\uac78 \ud574\uc8fc\ub294 \ub77c\uc774\ube0c\ub7ec\ub9ac\uac00 \uc874\uc7ac\ud558\ub294\ub370, \ub300\ud45c\uc801\uc73c\ub85c Dagger <\/a>\uac00 \uc788\ub2e4. \uc774 Dagger\ub97c \uc774\uc6a9\ud558\uc5ec Android\uc5d0\uc11c \ud3b8\ud558\uac8c \uc0ac\uc6a9\ud558\ub3c4\ub85d \ub9cc\ub4e0 \ub77c\uc774\ube0c\ub7ec\ub9ac\uac00 Hilt \uc774\ub2e4. \uc548\ub4dc\ub85c\uc774\ub4dc \uacf5\ud648\uc5d0\uc120 Hilt\ub97c \uc0ac\uc6a9\ud558\ub3c4\ub85d \uad8c\uc7a5\ud558\uace0 \uc788\ub2e4. Hilt\ub294 Java \ubca0\uc774\uc2a4\ub85c \uad6c\ud604\ub418\uc5b4 \uc788\uc73c\uba70, \ucef4\ud30c\uc77c \ud0c0\uc784\uc5d0 \ucf54\ub4dc\ub97c \ubd84\uc11d\ud558\uace0 \uac1d\uccb4\uc758 \uc0dd\uc131 \uad00\ub828 \ucf54\ub4dc\ub4e4\uc744 \uc0dd\uc131\ud574\uc900\ub2e4. \ucef4\ud30c\uc77c\uc740 \uae38\uc5b4\uc9c0\uaca0\uc9c0\ub9cc, \ub7f0\ud0c0\uc784\uc5d0 \uc601\ud5a5\uc774 \uc5c6\ub2e4. <\/p>\n\n\n\n